Galactus' Death

What if Galactus’ death, from starving or what have you, cause his very essence to be transferred into another being. Let’s say a human. And let’s assume that this human, of any age (younger the better, late teens), was a good person. I would love to see how this person’s life would be protected, saved, dealt with, considering that this is still a good person who has received this power without wanting it. Having this person deal with the simple fact that he or she will certainly die if he or she does not feed on planets. And also dealing with the amazing sense of loss and loneliness that would come with such a power. What kind of adventures would this person now have. Would there be any adventures at all? Would he or she stay good or become overwhelmed with power that evil takes over? Would be more interesting if this person stayed good, even without knowing what to do.